a new environment variable SHINYPROXY_OIDC_ACCESS_TOKEN is made available to the Shiny app containers when using the OpenId Connect (OIDC) authentication/authorization back-end; this allows to use the OIDC access token to authenticate against APIs from within the Shiny apps

fix 'Not authorized to access this proxy' issue which occurred when an admin accessed an app that was already running for another user or when the same user accesses the same app from two different browser sessions

new property shiny.docker.proxy.port-range-max allows to limit the number of ports to be used
by a single ShinyProxy instance e.g. to allow multiple instances to launch docker containers on a shared Docker Swarm cluster or to limit the number of concurrent apps on a single
instance

app-specific environment variables can be specified in the docker-env property inside the app configuration, similarly to docker-env-file

the logo-url property of an individual app (to display application logos on the landing page) now also support the file scheme (to be able to use local files as logos)